"AI" are Yatsuo Washi and were originally colors sold at Aiko's, a pioneer bricks and mortar in bringing washi to the United States, formerly in Chicago.

These single-dyed kozo, or Japanese mulberry papers, are ideal for box liners, end papers or spines for books, plus they are often used for relief prints or even chine colle.

Measures 25 x 37 inches @  45g/m².